diff --git a/linear_regression_presentation/requirements.txt b/linear_regression_presentation/requirements.txt
index a62a307..aad3f17 100644
--- a/linear_regression_presentation/requirements.txt
+++ b/linear_regression_presentation/requirements.txt
@@ -1,6 +1,6 @@
 attrs==19.1.0
 backcall==0.1.0
-bleach==3.1.4
+bleach==3.3.0
 cycler==0.10.0
 decorator==4.4.0
 defusedxml==0.6.0